Rib-knitting machine



iSWuD-WX (No Model.)

4 Sheets-Sheet I. R. W SCOTT. RIB KNITTING MACHINE. No. 577,789. Patented Feb. 23, 1897.

s Q 1 1 Q3 '8 N w a B: a I 4 1/ 5 7 I 8 K" S \Q Wiina$sa$ 7 4 Sheets Sheet 2.

{No Model.)

.77. SCOTT.

Patented Feb. 23, 1897.

dM :14 6M (No Model.)

R. W. SCOTT. RIB' KNITTING MACHINE.

4 Sheets-Sl1eet 3,

No. 577,789. 7 Patented Feb. 23, 1.897.

4 Sheets-Sl1e:et 4 'R. W. SGOTT.

BIB KNITTING MACHINE- Patented Feb. 23, 1897.

JYQJ

NlTED STATES ROBERT soorr, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR on ONE- HALF. TO LOUIS n, D. WI LI ..IAMS, 'OF'ASHBOURNE, PENNSYLVANIA. I

' RIB-KNITTING MACHINE.

SPEGIFICATION'fo'rming part of Letters Patent No. 577,789, dated Februzu'y 23, 1897.

Idelphia, Pennsylvania, have invented certain Improvements in Rib-Knitting Machines, of

which the following is a specification.

The object ofmy invention is toso construct a rib-knitting machine as toprovide for the application of-a facing or lining weft to one face of the fabric which is being produced, and this object I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is avertical section of suflicient of arib-knitting machine to illustrate my invention. Fig. 2 is a plan view of the same with parts cut away in order to bring it within the dimensions of the sheet. Fig. 3 is an inverted plan view of the dial eam-plate and its cams. Fig.4 is a plan .view v showing a dial cam-plate with a modified arrangement of cams whereby jacks are dispensed with. Figs. 5 and 6 are sections respectively on the lines 5 5 and 6 6, Fig. 4, and showing the needle-dial and needles; and Fig. 7 is a sectional diagram showing a modified arrange mcnt of needle-carriers. V

In Fig. l, Are'present's part of the fixed annular bed of the machine, to which is suitably secured the needle-cylinder B, the latter hav ing the usual vertical guides for the reeeption of the cylinder-needl s. D-is the usual eam-cyl nder surrounding the needle-cylinder, and F is the dial" camplate, which is securedto a'ndrotates with a "central spindle F, which may have 'anydeusual, for the reception of the needles 0;, these grooves, however, being extended inwardly, so as to provide for the reception of two sets of jacks d and f, which are alternatedthroughout thedial G., The jacks dare shorter than the jacksf and have bits projecting into an annular camway (1, formed in the cam-plate F, the jacks'f having bits extending into an annular camway f in said cam-plate. -The cam-plate F has two sets of knitting-cams,

Applicationflled May 8, 18 96. Serial-Np. 590,703; (R'o model.)

these comprising, as usual, the projectingcam g, the guard-cam g, and the retracting- 'cam 9, audit also has. two other cams d and and f the cam d? occupying the camway'd and the cam f oceupying the camway f, as shown in Fig. 3. On the cam-plateF are also a pair of cams hand 71, and mounted upon said cam-plate are diametrically-op- .posed plates I and J, projecting radially outwardf'fro'rn the cam-plate and each having on the under side cams m andn. I

Mounted upon the needle-cylinder-B is. a ring K, in the upper face of which are grooves which form radial: continuation's of the groovesof the dial G, and in these grooves are guided jacks s, adapted to be feontrolled.

' by the cams of the plates I and J L Each of the cams h and 11 has a nose 1, perforated, so as to serve as a weft-thread guide, and the inner portion of each cam terminates in a tail, servingto retract to the full extent the dial-needles which come under its ,action.

the. bits of the projected needles.

The operation of the machine is as follows: 7 5- Supposing that the cam-plate F is being-rotat-ed in the direction of the arrows, Fig. 2, one-haliiof'the needles will be projected by the jacks at under the action'of the cam cl until the bits of said .needles are brought under the influence of the outer face of the cam'yl, which will continue to project the needles, the latter entering the grooves of the ring K and the'movement continuing until the needles reach the position shown at the righthand side of Fig. 1. When in this position,

the weft-thread passing through the perforated nose t of the cam 'i can be'fed in behind Hence. when the l'atterare again thrust inward by 9: I

the action of the jacks s under the influence. of the cam m ofthe plate J they will pass over said weft-thread, which will consequently be laid between the stitchesof the dial-needles. which were not-projected andthe stitches of g 5 the needles which were projected. As soon as the jacks s have performed their duty of restoring the needles to the grooves of the dial said jacks are retracted by the, cam n of the plate J -Hence when the dial-needles mo reach the knitting-cams g g' g in the rear of said plate 'J all of the dial-needles can-be projectedby said knitting-cams, so as to receive the knitting-thread and form stitches, and when the stitches which were on the dial-needles have been cast off the weft-thread will lie alternately under and over said stitches and behind the stitches of the cylinder-needles. -While these operations are being performed by the cam (1 jacks d, oam i, jacksthe rear of said plate I. Hence in forming one course of stitches the weft-thread will be laid under the-stitches of certain needles of the dial, say the needles 1 3 5 7, &c., and over the stitches of the alternate needles 2 4 6 8, &c., of said dial, while in the next course the conditions are reversed,the we ft-thread being laid over the stitches of the needles 13 5 7, &c., and .under the stitches of the needles 2 4 6 8, &c. This-operation results inthe formation of a fabric such as shown in application for patent filed by me on the 5th day of May, 1896, Serial No. 590,296. I

The tailv of the cam h ort'serves to retract to the full extent the non-projected needles, thus drawing up the stitches carried thereby and slackening the stitches on the projected needles, so as to relieve the latter from ez'ccessive strain.

When the machineemployed is but a single-feed machine, but one set of proje'cting jacks, one needle-progectlng cam, and one cam-plate with its needle-restoring jacks.

need be. used, the weftpthread in this case being tied in at the same wales of thefabric in each course of the knitting. If desired, the jacks may be entirely dispensed with and the needles actuated directly by the cams on the cam-plate F. Such a constructlon is shown in Fig. 4, in which g, g, 9 h, and 2 represent cams similar to and having the same functions as the correspondinglylettered cams in Figs, 1, 2, and 3. Every other one of the dial-needles in this machine, however, has a bit longer than that of the needle beside it, (see Figs. 5and 6,) and there are'on the cam-plate F two cams w and w, adapted to act upon the long bits only, the

- short bits passing beneath the same, the cam w being a push-out cam and the cam w a push- 111 cam.

When the cam h is approaching the needles,"

the cam w acts in advance of said cam h and pushes -out the long-bitted needles until their hits are in range of said cam h, so that-only these long-bitte'd needles will be projected by the-latter, the short bits passing behind said cam h and the projected -needles, after the weft-thread has been laid behind the same, being retracted by means of a. cam m on the cam-plateF, so as to bring their bits within range. of the approaching set of knittingafterv the weft-thread has been laid behind the saine,'being drawn in by the cam m so as to be within range of the next set of knitting-cams, which. leaves the needles in condition for thelong-bittedneedles to be again projected by the cam w.

The weft-thread guide 15 may, as will be evident, be independent of the cam h or 2', as desired, the construction shown being preferred simply because of its convenience.

I have shown my invention as employed -in connection with a circular-knitting machine, but the invention can be adopted as well in straight-knitting machines, Hence in some of the claims I have used the term needlecarrier? to indicateaeircular dial or straight bed.

It is not necessary that the two needle-carriers should be at an angle to each other, as they inay, if desired, be in line with each other, as shown, for instance,-i-n Fig. 7, one needle-carrier having, inaddition to its 'own needle-grooves, additional grooves for receiving and guiding the needles projected from the other carrier.

Of course it will be understood that the needles may be arranged in alternating sets or groups of any desired number each, so that a number of needles in succession may be projected or allowed to remain in the retracted position, depending upon the desired length of the floats or ties of the weft-thread. It will be apparent also that in a multiplefeed machine the needles may be projected in advance of successive sets of knittingcams, so that the weft-threads will be tied in at the same wales in successive courses, and

also that the weft-thread may be introduced either in every course or only in separated courses, as desired.

- Having thus described my invention, I claim and desire to secure by Letters Pat- 1., The combination in a rib-knitting machine, of the two needle-carriers each provided with needles, cams for actuating the needles so as to cause them to form stitches, means for separating the needles of one of said carriers, and provision for laying a weftthread between said separated needles and behind the needles of the other carrier whereby it willbe disposed alternately to one side and to the other side of the stitches on the needles of one carrier and wholly behind the stitches on the needles of the other carrier.

2. The combination in rib-knitting machine, of the two needle-carriers each provided with needles, cams for actuating the needles so as to cause them .to form stitches, means for moving the needles outwardly from one needle-carrier and back again to the same, and provision for feedin g a weft-thread behind said needles when they are projected and at the same time feeding it behind the needles of the other needle-carrier.

other carrier.

3'. The combination in, av rib-knitting machine, of a circular needle-cylinder and a circular needle-dialboth provided with needles,

cams whereby the needles are actuated so as to cause them to form stitches, a circular plate located beyond said needle dial and constructed for the reception and guidance of needlestherefrom, means for moving needles from,

the circular needle-dial to said circular plate and back again, and provision for laying a weft behind said dial-needles when they are projected, and at the same time laying it behind the needles of the cylinder.

4. The combination in a'rib-knitt-ing machine, of two needle-carriers each provided with needles, cams for'actuating the needles so asto cause them to form stitches, mechanism for moving alternate needles or sets of needles outwardly from one of the needle-carriers, and back again onto the same, and provision for laying a weft thread behind the projected needles and at the same time layin g said weft-thread behind the needles of the 5. The combination in a rib-knitting machine, of two needle-carriers each provided with needles, cams for actuating the needles so as'to cause them to form stitches, means whereby in knitting one course certain needles are projected from one of the needle-carriers and then back again onto the same, and in knitting a succeeding course the alternate needles are thus projected and retracted, and provision for laying a weft-thread behind the projected needles and at the sametime laying it behind the needles of the other carrier.

,6. The combination in a rib-knitting ma-- chine, of two needle-carriers each provided with needles, cams for actuating said needles so as to'cause them to form stitches, cams for projecting the needles of oee carrier outwardly therefrom, jacks guided in the needlegrooves and serving to move the needles into" range of said projecting-cam, cams for actuwith needles, cams for actuating the needles so as to cause them to form stitches, a needle- 7 -receiving plate located beyond one. of said carriers, means for projecting needles from' said carrier onto the plate, jacks guided in the needle-grooves of the plate and serving to'restore the needles to the carrier, cams for acting upon said jacks, and provision for laying a weft-thread behind the projected needles and at the same time laying it behind 'the needles of the other carrier. 8. The combination in arib-knitting machine, of two needle-carriers each: provided with needles, cams for actuating the needles so as to form stitches, a cam whereby the needles of one carrier may be projected beyond the same, two sets of jacks alternating with each other andguided in the needle-grooves of said carrier, cams, one for acting upon thejacks of one set and the other for acting'upon the jacks of the other set, a plate located beyond the needle-carrier from which the needles are projected, said plate serving to receive the projected needles, means for restoring the needles from said plate to the carrier, and

provision for laying'a weft-thread behind'the projected needles, and at the same time laying it behind the needles of the other carrier.

with needles, cams for actuating the needles so as to form stitches, a cam adapted to project needles from one of the cam-carriers,

said cam having an eye for guiding a weftthread behind the projected needles and-at the same time laying it behind the needles of '9. The combination in a rib-knitting machine, of two needle-carriers each providedthe other carrier, and means for restoring the needles tov the carrier after the weft-thread has been 'laid' behind them, i

V 10. The combination in a rib-knitting ma.- chine, ofitwo"needle-carriers each provided with needles, cams for actuating theneedles so as to form stitches, a cam for projecting having a heel for retracting the non-projected needles, means for restoring the projected needles to the'carrier;and provision for laying a weft-thread behind the projected :nee-

dles and at the same time laying it behind.

"Ico needles from one of the carriers, said cam 

